fee-faw-fum noun 2exclamation 1forms 1 noun2 •A nonsensical exclamation attributed to giants and ogres. •(no longer used) Any expression calculated to impose upon the timid and ignorant.J. H. Newman impudent fee-faw-fums exclamation1 •A nonsensical exclamation attributed to giants and ogres.Fee-Faw-Fum!—— I smell the Blood of an English-Man; Whether he be alive or dead, I'll grind his Bones to make my Bread. — 1734 formsfee-faw-fums